The equilibrium constant $K_c$ for the reaction of $H_2$ with $I_2$ is 57.0 at 700 K $H_2(g) + I_2(g) \rightleftharpoons 2HI$; $K_c$ = 57 at 700K. select correct statement:

Question

(a) rate constant $k_f$ for the formation of HI is smaller than that of rate constant $k_b$ for the dissociation of HI

(b) $k_f > k_b$

(c) addition of catalyst increases value of $K_c$.

(d) addition of catalyst decreases value of $K_c$.